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Earn +20 ptsQ: Is the expression 2r plus 8 a even number?
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Why do you get an even number when adding two even numbers together?
The presentation of an even number is 2n (we can use any letter, such as 2m or 2r) Let the first even number be 2n and the second number be 2m. So we have, 2n + 2m = 2(n + m) let n + m = r, then by substituting r for n + m we have = 2r Since 2r represents an even number, then we can say that when are adding two even numbers we obtain another even number.
What is 2r plus 5 less than negative 1?
2r + 5 - - 1 When simplified: 2r + 6
What is the answer for 2r plus 5 -1?
2r + 4 or 2*(r+2)
7r plus 3 plus 2r - 2?
9r-1?
8 plus 2 8r-2r 4 3r plus 2 r 0 is the only solutionis this correct?
It is not correct to say that 8 plus 2 8r-2r 4 3r plus 2 r = 0
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